25994 has 8 divisors (see below), whose sum is σ = 40068. Its totient is φ = 12640.

The previous prime is 25981. The next prime is 25997. The reversal of 25994 is 49952.

25994 = T₁₁₂ + T₁₁₃ + ... + T₁₁₅.

It can be written as a sum of positive squares in 2 ways, for example, as 18769 + 7225 = 137^2 + 85^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

Its product of digits (3240) is a multiple of the sum of its prime divisors (360).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 240.

2²⁵⁹⁹⁴ is an apocalyptic number.

25994 is a deficient number, since it is larger than the sum of its proper divisors (14074).

25994 is a wasteful number, since it uses less digits than its factorization.

25994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its digits is 3240, while the sum is 29.

The square root of 25994 is about 161.2265486823. The cubic root of 25994 is about 29.6226816656.

It can be divided in two parts, 259 and 94, that added together give a palindrome (353).

The spelling of 25994 in words is "twenty-five thousand, nine hundred ninety-four".